package demo1;

import java.util.Map;
import java.util.TreeMap;

/**
 * @desc:
 * @author: WUSONG
 * @date: 2018/10/26 0026下午 2:42
 */
public class TestTreeMap {

    public static void main(String[] args) {
        Map<Integer, String> map = new TreeMap<Integer, String>();
        map.put(1, "a");
        map.put(2, "b");
    }

}
